按照需求完成如下 DQL 语句编写：
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    1. --1.
    2. select * from emp where gender = '女' and age in (20,21,22,23);
    4. --2.
    5. select * from emp where gender = '男' and (age between 20 and 40) and name like '___';
    7. --3.
    8. select gender, count(*) from emp where age < 60 group by gender;
    10. --4.
    11. select name, age from emp where age <= 35 order by age asc, entrydate desc;
    13. --5.
    14. select * from emp where gender = '男' and age between 20 and 40
    15. order by age asc, entrydate asc limit 5; /*limit 应放在最后*/